Tire-building machine



April 24, 19 28. 1,667,135

, G. F. WIKLE TIRE BUILDING MACHINE Filed March 19. 1924 2 Sheets-Sheetl GEORGE F." W/KLE IA/VENTOR A TTORNE Y April 24, 1928. v I 1,667,135

G. WIKLE TIRE BUILDING MACHINE Filed March 19. 1924 2 Sheets-Sheet 2Il'n'.,- I

la Br A y ":5 & \I

F134 .2/ all GEORGE E W/KLE INVENTOR ATTORNEY generally referred to asfabric. .15 formed on an annular core,

Patented Apr. 24, 1928.

UNITED STATES, PATENT, orrice.

GEORGE EQWIKLE, or MILWAUKEE, rwrsoousm.

I TIRE-BUILDING MACHINE.

Application filed Match 19, 1924. serial in. 700,395.

My invention relates to machines for building pneumatic tire casings andmore particularly to a device for applying cer ta in elements to thesides of the tire carcass after thelatter has been formed on thebuilding core and preferably while it is still positioned thereon. V a

, In the building of tire casings. it is customary to build the carcassofbiaseut rubberized fabric, which'inayrbe either square woven or one ofthe various kinds of so called cord fabric,

vice inoperative posit-ion with relation to the building core, a r

Flgure 2 1s an enlarged section on line 22 of Figure 1, and showing themanner in which the side wall element is applied,

Figure 3 is a plan view, on an enlarged scale, of the applying device,and

Figure 4 is a section taken on the line et-1 of Figure 3. r

In the drawings 1 represents a building core which in the formillustrated comprises a rim 2 supporting an air bag f such as iscustomarily inserted in a casing of the cord type prior to its beingplaced in the mold, the rim 1 being provided with a suitable aperture toaccommodate the valve 6 of the air bag. The rim is preferably formed insections which are adapted to be retracted by racks 8 secured to the rimsections and tea chuck 10, mounted on a shaft 12 which is power rotatedby any suitable means such as that disclosed in my copendingapplication, Serial Number 697,200, filed March 1, 1924. Thetireflcarcass formed on the core is shown atil3 in Figure 1, the

tread being indicated at 14, the carcass and tread being broken away atthe left of said figure to show the core.

i The side wa l applying devices are prefer:

shafts 20 upon w freely mounted It will be understood that any suitablemounting may ,all being hereinafter The carcass ings 28 formed integralcured to reduced portions 24 of shafts 20.

21 and with the chafing strip overlying ably mounted on a suitablestandard 16 adapted to be positioned adjacent the building core. 1 Asshown, this standard is provided with brackets 18 hinged to the standardat 19, and su pe -rin er their free ends hich applying rolls 21 are beprovided for rolls 21 and the mounting above described is illustrativeonly.

Rolls 21 are'formed-ofreli atively "soft'l'ubber preferably vulcanizedin position on sleeves 22 rotating on-bu'shwith or suitably'se- Rolls 21are provided at their inner ends with beveled metal discs 26 secured tosleeves 22 by screws 27. Arms 28 are non-rotatably mounted on shafts 20adjacent the ends of rolls 21 and the shafts 20 are threaded attheirouter vends to' receive nuts 29 which retain arms 28' and rolls21in position on the shafts. Arms 28 support between their outer endsshafts 30ton which are rotatably mounted tension rolls 32. j 1

'Theshafts 20' are centrally bored at 34 to upwardlyv and rearwardly tooverlie the rolls terminate in blade-like guides 36. Rods 35 are held inlongitudinally and axially adjusted position by sets'crews38. 7' i Theoperation is as follows: With brackreceive rods 35 the ends of which arebent et-s 18 swung outwardly about their v pivots Q 19 as shown in fullline at the left of Figure 7 at the right of said 1 2 'aud in dottedline figure, standard 16 is moved toward the building core to positionrolls 21 adjacent the sides of thecarcass as shown in Figure 1.,

One end of a side wall strip is then pressed in proper, position againstthe side of the carcass and roll'21 is swung about its pivot 19 tofirmly press the end of the strip against the tire carcass. The sidewall strip is composed of a chafing strip 40, side wall rubber strip l2,and, gum strip 4 L The operator brings the strip, now gripped betweenthe core and roll 21, across the face of the roll and down over tensionroll 32, (see Figure 2) V blade 36 the edge of which abuts against thevertical edge of the side wall rubber strip 42 (see Figure 4) and servestoguide the unit strip into proper position on the carcass. When thecore is placed inrotation the strip, being tacky and being uniformlypressed against in proper position, beveled disk 26 forcing the edge ofthe side Wall rubber into the soft tread rubber which it overlaps. Theoperation is then repeated on the other side of the carcass to completethe tire.

It Will be understood that my invention is not restricted to theapplication of a side wall strip of the specific form shown and that,While I have illustrated my invention in relation to a resilientbuilding core, it may be used with any type of building core such as an.iron core, collapsibleor other Wise. a

What I claim as my invention is 1. A device of the character describedcomprising a rotatable core, a resilient roll, freely rotatable upon ashaft, and adapted to be positioned against the side of a tire carcasssupported on said core, and a tension roll and a guiding devicesupported by said shaft. I l

2. A device of the character described comprising a rotatable core, aresilient roll adapted to'be positioned against the side of a tirecarcass supported on said core, an unyielding disk secured to one end ofsaid roll and strip guiding and tensioning means associated therewith.

3. Side Wall applying means comprising a resilient roll, a tension rolladjacent thereto and a guiding blade overlying the surface of saidresilient roll. I

4. Side Wall applying means comprising a resilient roll rotatable upon ashaft, and a tension roll and guiding blade supported by said shaft.

I 5. Side Wall applying means comprising a resilient roll, an unyieldingdisk secured to one end of said roll and projecting beyond its surface,a shaft upon which said roll is freely rotatable, a tension rollsupported by said shaft adjacent the surface of the reguiding bladeadjustsaid shaftand overlying the roll, said disk being beveled, thebeveled por tion projecting beyond the surface of said roll and adaptedto engage the outer edge of the side Wall.

7. Side Wall applying means comprising a roll adapted to press a sidewall strip in place against a tire carcass, tension means spaced fromsaid roll and a guiding means positioned between said the point ofapplication of the strip.

8. Side Wall applying means comprising a roll adapted to press a sideWall strip in place against a the carcass, tension means spaced fromsaid roll and a guiding means positioned to engage the under side of thetension means and strip as the latter passes from the tensionin'g meansto the applying roll.

9. A device for applying a compound side wall strip to a tire carcasscomprising an applying roll adapted to press the strips in place againstthe carcass and a guiding membcr positioned to engage an intermediatelongitudinal edge of the compound strip as the latter passes to theapplying roll.

10.' A device for applying a compound side wall strip to a tire carcasscomprising a roll adapted to press the strip in place against the tirecarcass, tension means spaced from said roll and a giiidii' gme1nber,'positioned between said tension means and the point ofapplication of the strip, adapted to underlie the strip and engage anintermediate longitudinal edge of the compound strip as the latterpasses to the applying roll.

In testimony whereof I liave'signed my name to the above specification.

GEORGE F. WIKLE.

